The authors provide a version of a double-auction market simulation designed for classes too large for most computer labs to accommodate in one sitting. Instead, students play the game from remote computers, wherever they may be and at any time during a given time period specified by the instructor. When the window of time expires, students can view the results in a variety of pedagogically relevant displays. The authors also provide a set of on-line activities that take the student "by the hand" through a simple analysis of the simulation. Educators can use, copy, modify, and distribute the source code for this software under the GNU General Public Licence.